Two Loop Particition Function in (Compactified) Heterotic String Vacua
J. Atick · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 2022
Two loop partition function for the heterotic string theory, compactified on any background preserving space-time supersymmetry at the string tree level, is explicitly calculated.This includes Es x Es or SO(32) heterotic string theory in ten dimensional flat space-time.